From 863fad1bcc9de52381e117bfecc89dfb4a52f84a Mon Sep 17 00:00:00 2001
From: Alvaro Herrera <alvherre@alvh.no-ip.org>
Date: Thu, 27 Jun 2013 15:20:33 -0400
Subject: [PATCH] Document relminmxid and datminmxid
I introduced these new fields in 0ac5ad5134f27 but neglected to add them
to the system catalogs section of the docs.
Per Thom Brown in message
CAA-aLv7UiO=Whiq3MVbsEqSyQRthuX8Tb_RLyBuQt0KQBp=6EQ@mail.gmail.com
---
doc/src/sgml/catalogs.sgml | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml
index e638a8fcb1a..09f7e40b29f 100644
--- a/doc/src/sgml/catalogs.sgml
+++ b/doc/src/sgml/catalogs.sgml
@@ -1884,6 +1884,19 @@
</entry>
</row>
+ <row>
+ <entry><structfield>relminmxid</structfield></entry>
+ <entry><type>xid</type></entry>
+ <entry></entry>
+ <entry>
+ All multitransaction IDs before this one have been replaced by a
+ transaction ID in this table. This is used to track
+ whether the table needs to be vacuumed in order to prevent multitransaction ID
+ ID wraparound or to allow <literal>pg_clog</> to be shrunk. Zero
+ (<symbol>InvalidTransactionId</symbol>) if the relation is not a table.
+ </entry>
+ </row>
+
<row>
<entry><structfield>relacl</structfield></entry>
<entry><type>aclitem[]</type></entry>
@@ -2621,6 +2634,20 @@
</entry>
</row>
+ <row>
+ <entry><structfield>datminmxid</structfield></entry>
+ <entry><type>xid</type></entry>
+ <entry></entry>
+ <entry>
+ All multitransaction IDs before this one have been replaced with a
+ transaction ID in this database. This is used to
+ track whether the database needs to be vacuumed in order to prevent
+ transaction ID wraparound or to allow <literal>pg_clog</> to be shrunk.
+ It is the minimum of the per-table
+ <structname>pg_class</>.<structfield>relminmxid</> values.
+ </entry>
+ </row>
+
<row>
<entry><structfield>dattablespace</structfield></entry>
<entry><type>oid</type></entry>
--
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